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PLC Communication with HD 2000

the1saynt

May 15, 2008 00:42

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We Want to use a plc with an RS232 comm. port to play .Mpg files. We have verified the PLC is sending string text to the HD2000 but nothing is happening. We have turned on the necessary roObjects and believe we have the program right. We create and test the programs using a hyperterminal and every thing works great. We have even been able to make the HD2000 operate our PLC. Is there a simple instruction that would allow the HD2000 to recieve a string like "11.mpg" from a PLC and and then play that file? We do not want to operate through the shell because it is dissabled by the "autorun.bas" script we use. WE THINK?

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6 comments

• 0
  
  RokuLyndon May 15, 2008 00:46

  
  
  Can you send me the script you are using? You can reach me at <!-- e --><a href="mailto:lallydice@roku.com">lallydice@roku.com</a><!-- e -->.
  
  
  
  I'll do some checking in the mean time.
  
• 0
  
  the1saynt May 15, 2008 01:44

  
  
  vid=CreateObject("roVideoPlayer")
  
  image=CreateObject("roImagePlayer")
  
  mode=CreateObject("roVideoMode")
  
  serial=CreateObject("roSerialPort", 0, 38400)
  
  p=CreateObject("roMessagePort")
  
  vid.SetPort(p)
  
  serial.SetLineEventPort(p)
  
  vid.SetAudioOutput(2)
  
  
  
  imagemode=1
  
  videomode$="1280x1024x60p"
  
  
  
  main="Logo.jpg"
  
  one="bp.mpg"
  
  two="pdx.mpg"
  
  
  
  vid_to_play=""
  
  
  
  mode.SetMode(videomode$)
  
  image.SetDefaultMode(imagemode)
  
  
  
  intro:
  
  image.DisplayFile(main)
  
  
  
  
  
  wait_for_serial:
  
  msg=wait(0,p)
  
  
  
  if(type(msg) = "roStreamLineEvent") then vid_to_play=msg
  
  endif
  
  
  
  serial.SendLine(vid_to_play)
  
  vid.PlayFile(vid_to_play)
  
  
  
  wait_for_video_end:
  
  msg=wait(0,p)
  
  
  
  if type(msg)="roVideoEvent" then
  
  status=msg.GetInt()
  
  if status <> 8 then goto wait_for_video_end
  
  vid.StopClear()
  
  endif
  
  goto intro
  
• 0
  
  RokuLyndon May 15, 2008 04:57

  
  
  if(type(msg) = "roStreamLineEvent") then vid_to_play=msg
  
  endif
  
  
  
  That line has an extra endif.
  
  
  
  Also:
  
  
  
  -Please turn off hardware handshaking on the plc, if enabled.
  
  -Please verify the only connections to the brightsign are to TX, RX, and ground.
  
  
  
  Do you know what the plc sends as the end of line character?
  
• 0
  
  the1saynt May 16, 2008 00:30

  
  
  Verified the hand shake is not an issue. The last character sent is the last character we type. Base on the program above what string would you send to  make the file "bp.mpg" play through the serial port?
  
• 0
  
  RokuLyndon May 16, 2008 02:04

  
  
  Hi,
  
  
  
  The PLC needs to send an EOL (end of line) character, a carriage return after the string.
  
• 0
  
  the1saynt May 16, 2008 02:34

  
  
  All Set
  
  
  
  THANK YOU,
  
  
  
  The1saynt